A focused answer for a specific decision.
Use this calculator for a quick weekday count when “working days” means Monday through Friday and public holidays are not being removed. It is useful for planning schedules, delivery windows, review periods, and rough staffing estimates.
- Counting weekdays in a project or notice period.
- Checking the number of Monday-to-Friday dates in a reporting window.
- Comparing a calendar duration with a simple workweek duration.
Formula and calculation method.
Working days = count of dates from start through end whose weekday is Monday, Tuesday, Wednesday, Thursday, or FridayThe calculator walks the inclusive calendar range and counts each weekday. If dates are entered in reverse order, it counts the same range from the earlier date to the later date. It does not subtract holidays.
See the answer in context.
Monday, August 3 through Friday, August 14, 2026
Result: 10 weekdays
Interpretation: Both weekday endpoints count, while the intervening Saturday and Sunday do not.
Saturday, August 8 through Sunday, August 9, 2026
Result: 0 weekdays
Interpretation: Neither date falls Monday through Friday.
September 1 through September 30, 2026
Result: 22 weekdays
Interpretation: The count reflects the weekday pattern in that specific month, before subtracting any holidays.
Assumptions and common mistakes.
What the result assumes
- A standard workweek runs Monday through Friday.
- Both endpoints are included when they are weekdays.
- Saturday and Sunday are the only excluded days.
- Dates are whole calendar dates without work shifts or time zones.
Mistakes to avoid
- Assuming public holidays are automatically excluded.
- Expecting an exclusive count that omits the start or end date.
- Using the result for a nonstandard schedule such as Tuesday through Saturday.
- Treating working days as 24-hour periods instead of calendar weekdays.
What unusual inputs mean.
Entering the later date first produces the same count for the same calendar range.
A one-date range on Monday through Friday counts as one weekday.
A one-date range on Saturday or Sunday counts as zero weekdays.
The result may be higher than actual business days because holidays are not removed.
How to use this calculator.
- Enter the first date in the range.
- Enter the second date; either chronological order is accepted.
- Read the inclusive weekday count.
- Check a holiday calendar separately when the result affects payroll, contracts, or official deadlines.
What the result leaves out.
The result is a weekday count, not a jurisdiction-aware business-day calendar. It excludes no national, regional, religious, company, bank, or market holidays and does not support custom weekends, partial workdays, shifts, or cutoff times.
Questions people ask.
Are the start and end dates included?
Yes. Each endpoint counts when it falls Monday through Friday.
Does the calculator exclude public holidays?
No. It excludes only Saturdays and Sundays. Subtract applicable holidays separately.
What happens if I enter the dates in reverse order?
The calculator uses the earlier and later dates, so the weekday count is the same in either order.
Does a single weekday count as one working day?
Yes. Because the range is inclusive, a Monday-to-the-same-Monday range counts as one weekday.
Can I use a Saturday-to-Sunday workweek?
No. This calculator uses the standard Monday-through-Friday definition and cannot customize working weekdays.
Is this suitable for legal or contractual deadlines?
Use it only as a preliminary count. Official deadlines may apply jurisdiction-specific holidays, service rules, and exclusive counting conventions.
Why can this differ from a payroll system?
Payroll systems may use scheduled shifts, paid holidays, leave, partial days, and company calendars that this simple weekday count does not include.